diff --git a/Dockerfile.qemu b/Dockerfile.qemu
index 7780755cd..49408350b 100644
--- a/Dockerfile.qemu
+++ b/Dockerfile.qemu
@@ -5,4 +5,4 @@ COPY alpine/kernel/vmlinuz64 .
 
 RUN gzip -9 initrd.img
 
-ENTRYPOINT [ "qemu-system-x86_64", "-serial", "stdio", "-kernel", "vmlinuz64", "-initrd", "initrd.img.gz", "-m", "256", "-append", "earlyprintk=serial console=ttyS0 noapic", "-vnc", "none" ]
+ENTRYPOINT [ "qemu-system-x86_64", "-serial", "stdio", "-kernel", "vmlinuz64", "-initrd", "initrd.img.gz", "-m", "512", "-append", "earlyprintk=serial console=ttyS0 noapic", "-vnc", "none" ]